Jan ( N = 315 )

Feb ( N = 288 )

Mar ( N = 300 )

Apr ( N = 305 )

May ( N = 311 )

Jun ( N = 328 )

Jul ( N = 330 )

Aug ( N = 336 )

Sep ( N = 330 )

Oct ( N = 515 )

Nov ( N = 484 )

Dec ( N = 446 )